Hello,

Im meant to create a program to compute inverse tan - tan(^-1)(x)

to a given accuracy. They gave examples in class of how to do it for

1+1/2+1/3+...
1+1/2+1/4+1/8+...
sin(x)

like to 8 decimal places or whatever.

here's what i got on my screen.

http://kr.cs.ait.ac.th/~radok/math/mat6/calc6.htm
This sort of has an explanation on how to get the taylor series for inverse tan. basically i was gonna try to copy and paste the output for the sin(x) eg. and just swap the taylor series to see if it would work.

ANY HELP WOULD BE APPRECIATED.
OUTPUT:

> sum_ex1:=proc(x)